Spacing device for punching or slotting machines



E. y. BIRDSALL SPAGING DEVICE FOR PUNCHING OR SLOTTING MACHINES FiledJuly 27, 1922 4 Sheets-Sheet g E. V. EERDSALL SPACING DEVICE FORPUNCHING OR SLOTTING MACHINES Feb. 3. 925. 1,524,905

Filed July 27, 1922 4 sheetssheet s Feb, 3, 1925. 1,524,905

E. v. BIRDSALL SPACING DEVICE FOR PUNCHING 4OR SLOTTING MACHINES FiledJuly 27, 1922 4 Sheets-Sheet 4 EDWIN V. BIRDSALL, OF JOLIET, ILLINOIS.

SPACING DEVICEJEOB, PNCHING 0R SLOTTING- MACHINES.

Application filed July 27,

To all whom t may concern:

Ee it known that l, EDWIN V. BIrDsALL, a citizen of the United States,residing at Joilet, in the county of "Will and .State of Illinois, haveinvented certain new and useful Improvements in a Spacing Device forPunching or Slotting Machines, of which the following is aspecification.

My invention relates to a spacing device for punching or slottingmachines and has particular reference to an apparatus which is appliedto the table of a punching press or a slotting machine and insuresaccuracy in the punching of rivet holes and the like in plates, anglesand the like without the necessity of laying out the work beforehand ormarking the places where the holes are to be placed in the work piece.

The primary object of my invention is the provision of a spacing devicewhich eliminates the laying out of the work and which insures accuracyin the punching of plates, thus eliminating waste and is also a time andlabor saver because when my device is used, the work piece is so placedunder the punching dies `vthat the holes or slots will be properlypositioned without measuring or laying out the work.

Another and further object of my invention is the provision of a spacingapparatus which is positive in its operation and which is so constructedthat unless the device is in proper position and in proper register withthe templet used for spacing purposes the work piece is not in properposition which can be told at a glance by the operator.

These and other objects of my invention will be more fully and betterunderstood by reference to the accompanying sheets of drawings in which-Figure 1 is a plan View of the work table of a punching press embodyingmy invention;

Figure 2 is a side elevational view of my improved device;

Figure 3 is an end elevational view of the device shown in Figures 1 and2;

Figure 4L is a detailed view partially in section and partially inelevation of the latching mechanism; v

Figure 5 is a detailed sectional view of the latch in engagement withthe templet;

Figure 6 is a detailed view showing the latch out of engagement with thetemplet.

1922. serial No. 577,847.

Figure 7 is a front elevational view of punch press showing the feedtable attached thereto, and

Figure 8 is a side elevational view of the punch press shown in Figure7.

Referring now specifically to the drawings, a work table 10 of apunching press 10a is shown, which is positioned at the front of thepress and extends to each side thereof so as to support a work piecethereon and is built up of an l.shaped member 11 to which a spacingmember 12 is secured, mounted upon a plate 13, and an angle 14 alsosecured to the plate 13 by means of rivets 15, the ends of the members11 and 14: being separated so that a slot 16 is formed extendinglongitudinally of the work table 10. rlhe spacer 12 has its inner edge17 terminating short of the inner side of the member 11 so that themember 11 projects over the edge 17 forming means whereby the spacercarriages hereinafter described are held in position upon the work table10. An ejector or kick-out mechanism 18 is shown above the work table 10which forms no part of my present invention. A vertically extendingmember 19 is also provided having a roller 20 mounted in its upper endthereof which is adapted to hold an angle-iron 21 in position againstthe work table 10, this holding device forming no part of my presentinvention.

Mounted upon each side of the punching head of the press is a pair ofspacer carriages 22 and 23, the carriage 23 being composed of a. member24 in sliding contact with the member 11, theA said member 24 havingy ahook 25A formed.v on ,its inner end 26 which terminates under the end ofthe member 11 so that the end-260i? the member 24"is movablelongitudinally in the slot 16 on the upper side of the work table 10 andthe spacer carriage is held in position upon thework table 10. At thelower side of the member 24 is a short hollow member 27 having anL-shaped member 28 eX- pen 33 With a coil spring 34 inserted in a recess35 in the end of the latch 3l, the member portion 32 on 'the latch 31.

.32'eXtending inwardly a slight distance beyond' the end of the member3l. Secured to the outer end of the member 23 by means of a rivet 36 isa latch 37 pivotally mounted upon the member 28 so that its inner end 33engages against the outer end 39 of the inember 27 when it is desired tohave the spacer carriage unlatched from the templet described hereafter.ll/lounted upon the under side of the member 13 is a templet 40 angularin cross sectional and having a downwardly extending portion 4l with aplurality of notches 42, 42 therein having square sheulders 43, 43 atone side of the notches 42 which are adapted to be engaged by the hingedrlhe 'templet 40 extends along on the underside of the work table 10 forits entire length with the notches 42 therein being spaced the samedistance as holes or slots are to be punched in the Work piece. Each ofthe spacer carriages 22 and 23 has plates 44 and 45 secured theretorespectively by means of rivets 46, the

Aplates being secured to the outer side of the carriages 22 and 23 andproject over the edge of the angle 2l so that it is held in properposition upon the Working table by means of the spacer carriages and themeinber 19 as hereinabove described.

ln operation of the device, if for instance, it is desired to slot anangle such as 2l as shown in the press or punch bolt holes therein, theangle is placed upon the vvorl: table 10 and the carriage 22 brought upagainst the end thereof With the latch 3l engaging in the notches 42 inthe templet 40. rlhe operator by pushing down on the outer end of thelatch 37 raises the inner end so the spring 29 pulls the latch inwardagainst the outer side of the templet 40 and. so the spacer riage 22 ismoved along the member 43 'against the shoulder 42 with the carriagepushed up against the end of the angle 2l. The opposite carriage is thenbrought up against the opposite end of the Werl; piece and because ofthepositioning of the notches 42 the Work piece 2l is in position underthepunching dies for the first operation which, after being completed, theoperator releases each of the spacer carriages 22 and 23 by pullingoutward on the handles 37 when the tivo spacer carriages can be movedfrom one side to the other and the angle moved to the next set ofnotches 42 on the templet 40 when the angle 2l is in position foranother operation of the press. rlhe purpose of the member 32 Which issecured to the latch 3l. is to make sure that the latches 3l are inVproper position in the notches 42 and immediately upon the latch beingreleased, the spring' 94 pushes the member 32 outward as shown in Flgure6) so the carriage must be moved back and the spacer carriage brought upbeneat-,eos

4The spring 34 is only sufficiently strong to push the latch 32 outwardand only overcome very slight resistance so that there is no appreciableamount of resistance afforded to the movement of the carriage by thespring so that the carriages can be easily moved up and into position onthe punching table l0. 'lhe carriages 22 and 23 are duplicates of eachother except that the latches are made in rights and lefts, the hingeportion being on. the far side of the carriage ifi/ith respect to thepunching dies of the press, that is, the pressure of the Work piece onthe spacer carriages 22 and 23 has a tendency to force the latch 32 inthe position shown in Figure 5 of the drawing llhile l have describedmore or less precisely the details of construction, l do not vWish to beunderstood as limiting myself thereto, as l contemplate changes in formand the proportion of parts and the substitution of equivalents ascircumstances may suggest or render expedient Without departing from thespirit or scope of -my invention.

l claim:

l. A spacing device comprising in com.n bination with a work table, aplurality of movably mounted carriages supported by said table, templetshaving spaced recesses therein secured to said punch press table, andlatching means carried by said carriages for engagement With therecesses in said templets.

2. il, spacing device comprising in combination with a punching press, aWorlr table, a plurality of slidably mounted carriages upon said Worktable, templets having notches therein secured to said table, latchescarried by said carriages adapted to engage the templets at the notchesthereof, the said latches having spring pressed hinge portions adaptedto abut against the templets.

3. A spacing device comprising in combination a Work table, templetshaving notches therein, secured to said Work table, a. plurality ofcarriages adapted to abut against a Work piece on said Work table,latching members carried by each ofsaid carriers adapted to engage thetemplet, the

spaced vopenings therein, secured `to said work table and spring latchmembers adapted to engagev the templets.

5. A spacing device comprisingin combination With a Worl table, aplurality of movably mounted lcarriages on said table adapted to abutaga-inst each e'nd of a Work piece, templets having' spaced notchesthere'' in, secured to said table, andlatches on said carriages adaptedte 'engagethefnotchcs in the templets whereby a Work piece is properh7positioned under the punchingdies.

6. A spacing device comprising in combination, with a work table, aplurality of movably mounted carriagesnonwsaid.table adapted to abutagainst each end' of a Work EDWIN V. BIRDSALL.

